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Description
I myself have bad histamine intolerance, and over the past few months it's started seeming more and more likely that I also have some degree of mast cell activation syndrome
& Tsokos, G

For energy and wellness maintenance, weekly or bi-weekly B12 injections are typical

This is where the concentration you chose comes into play
Introduction Traditionally, vitamin B 12 replacement is administered intramuscularly (IM)
